The most important symptom of hemorrhoids is blood in the stool and prolapse. Repeated and repeated bleeding during bowel movements will cause the body to lose a large amount of iron, causing iron deficiency anemia. This is because under normal circumstances iron absorption and excretion of iron to maintain a balanced state, the loss of iron is very small, the normal adult male daily loss of iron is not more than 2 mg, and blood in the stool of the patient, if the daily blood loss of more than 6 ~ 8 ml of iron loss of 3 ~ 4 mg or more. Normal human male total iron content of 50 mg / per kilogram of body weight, women about 35 mg / per kilogram of body weight, if long-term blood loss, the loss of a large amount of iron, so that the body’s total iron content is lower than normal, can cause iron deficiency anemia. Another major symptom of hemorrhoids is the prolapse of internal hemorrhoids. Prolapse of the internal hemorrhoids outside the anus, by the sphincter clamping, venous return is blocked, and arterial blood is still continuously input to increase the volume of hemorrhoidal nuclei until the arterial blood vessels are closed, thrombosis, hemorrhoids harden, pain, difficult to send back to the anus. The traditional view is called “strangulated internal hemorrhoids”. But the clinical see external hemorrhoids, the formation of thrombus is more common, so more associated with pain, when the hemorrhoidal nucleus can not be sent back, also known as “embedded hemorrhoids”. Prolonged hemorrhoid embedded, there will be the following pathological changes: (1) necrosis: hemorrhoids embedded in the anus, due to a series of pathological changes, so that the local metabolite accumulation, further aggravate the local edema in the anus, aggravate the hemorrhoid embedded, which is a vicious circle. So internal hemorrhoids embedded for a long time, necrosis is bound to occur. At this time the necrosis is often limited to the mucous membrane part of the hemorrhoidal nucleus, but there are other parts of the human body infringement. Foreign countries have reported: hemorrhoidal nucleus of the thrombus upward diffusion, necrotic area extends to the rectal wall, the result in the pelvis caused serious sepsis. This situation is rare, but must cause clinicians pay great attention. (2) Infection: After hemorrhoids incarcerated, there are different degrees of infection, the patient has symptoms such as acute and severe pain, obvious anal swelling, etc. At this time, the infection is mostly confined in the local anus, and if it is reset forcefully, it is easy to spread the infection and cause submucosal, perianal or sciatico-rectal fossa abscess, and if the dislodged bacterial embolus is upwardly traveled along the vein, coupled with the inappropriate use of antibiotics or not using any antimicrobial drugs, then the formation of portal bacteremia or even sepsis, and also the formation of portal bacteremia. Even septicemia, can also form liver abscess. Fatal portal vein sepsis associated with hemorrhoidal incarceration has been reported abroad.